Doing a GT40P Headswap... some questions.

[TomCat]

I've searched and all the like and I haven't found the answers for some of my dumb questions. I just got a set of GT40Ps with roughly 70K on them... also a set of TFS dual springs, retainers, shims and keepers... I'll be getting some stem seals from CSK tomorrow. My first question is: The shims... I read that the installed height of the springs should be 1.800"... how do the shims fit into this? They are .060" a piece. I'm just a little confused as I've never dealt with them before. Do I just keep adding shims till I hit that 1.800"?? Number two! Dampers... what do they do and where do they go? I mean in relation to the springs, retainers and all that blah. Do I need to run them? Probably noob questions, but I gotta know
Besides those, please feel free to add any tips/info! I want this install to go smoothly.

Edit: I'd check my manual, but I lost the durn thing! Grr. Probably wouldn't mention anything anyhow.

 

[v8only]

the tfs spring kit should come with a measuring bar and different thickness shims.

put the lid over the valve stem without the spring on the valve, put the keepers on, and pull up all the way. Next slide the measuring rod between the head and the lid. if there is play, add shims till there is not. when it's a snug fit, add spring and move on to next cylinder.

 

[RYC CUKR]

Keep in mind that with the TFS kit the retainers are specific for the exhaust and intake valves. The stock retainers have rotators on the exhaust valves I believe so the groove for the locks are at a different height than the intake valves.

But shimming the valves is just like v8only said. Pretty easy with the TFS kit.

 

[TomCat]

Right on guys, thanks!